. >> the victims are being mourned across the nation at this candlelight vigil at u.s. capitol but nowhere is sadness more than in this small community. >> he really struggled to find the words as to what happened. >> even an emotional president obama had to fight back tears. >> this evening michelle and i will do i know what every parent will do in america is hug our children a little tighter and tell them that we love them and remind each other how much we love one another. there are families in connecticut that cannot do that tonight. >> one of the six adults killed was 47-year-old, the school's principal. she was known for her playful passion and just a month ago she dressed up as a sandy hook book fairy wearing a crown to inspire first graders to read. >> we're learning about the brave teachers who desperately tried to protect young students from the gunman. police s.w.a.t. teams tried to find the shooter. a first great teacher was killed in the attack. she put herself between the shooter and children. "good morning america" george stephanopolous talked with her co